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Naloxone (Nasal)

Generic name: naloxone [ nal-OX-one-hye-droe-KLOR-ide ]
Brand names: Kloxxado, Narcan
Drug class: Antidotes

Medically reviewed by Drugs.com. Last updated on Aug 28, 2023.

Uses for naloxone

Naloxone nasal spray is used for emergency treatment of an opioid overdose or a possible overdose. It will temporarily reverse the effects of an opioid medicine. Some signs and symptoms of an opioid emergency are breathing problems (which can range from slow or shallow breathing to no breathing), extreme sleepiness, slow heartbeat, or not being able to respond, a very small (pinpoint) pupil in a person who is difficult to awaken.

This medicine is available both over-the-counter (OTC) and with your doctor's prescription.

Before using naloxone

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:

Allergies

Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

Appropriate studies performed to date have not demonstrated pediatric-specific problems that would limit the usefulness of naloxone nasal spray in children.

Geriatric

Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of naloxone nasal spray in the elderly. However, elderly patients are more likely to have age-related kidney, liver, or heart problems, which may require caution and an adjustment in the dose for patients receiving naloxone nasal spray.

Breast Feeding

There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.

Interactions with Medicines

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

Interactions with Food/Tobacco/Alcohol

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.

Other Medical Problems

The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:

Proper use of naloxone

This medicine should be given immediately upon when a suspected or known overdose of an opioid has occurred. This will help prevent serious breathing problems and severe sleepiness that can lead to death.

Your doctor or a pharmacist can tell you where to buy this medicine. It is available without a doctor's order at most major pharmacies. Follow the instructions on the medicine label if you are using this medicine without a prescription.

This medicine is for use only in the nose. Do not get any of it in the eyes or on the skin. If it does get on these areas, rinse it off right away.

This medicine must be given to you (the patient) by someone else. Talk with people close to you so they know what to do in case of an emergency.

This medicine is not a substitute for emergency medical care. Call for emergency assistance after administering the first dose and keep the patient under continued surveillance.

This medicine comes with a patient information leaflet and patient instructions. It is very important that you read and understand this information. Be sure to ask your doctor about anything you do not understand.

To use the nasal spray:

Dosing

The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

Storage

Keep out of the reach of children.

Do not keep outdated medicine or medicine no longer needed.

Ask your healthcare professional how you should dispose of any medicine you do not use.

Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.

Do not freeze or expose to heat. If the spray is frozen and is needed in an emergency, do not wait for the spray to thaw. Get medical help right away. However, the spray may be thawed for 15 minutes in room temperature, and it can still be used if it has been thawed after being frozen before.

Precautions while using naloxone

The effects of the opioid medicine may last longer than the effects of the naloxone. This means the breathing problems and sleepiness could come back. Always call for emergency help after the first dose of naloxone.

Severe opioid withdrawal symptoms may happen suddenly after receiving this medicine. These include body aches, a fever, sweating, runny nose, sneezing, goose bumps, yawning, weakness, shivering or trembling, nervousness, restlessness or irritability, diarrhea, nausea or vomiting, stomach cramps, fast heartbeat, and increased blood pressure.

Some types of opioid medications (eg, buprenorphine, pentazocine) may require larger or repeat doses of naloxone to reverse the opioid effects.

Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.

Side Effects of naloxone

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

Less common

Incidence not known

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

Commonly used brand name(s)

In the U.S.

Available Dosage Forms:

Therapeutic Class: Antidote

Pharmacologic Class: Naloxone

Frequently asked questions

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Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.